what are they made of and what did the washing instructions say on how to wash them? Were they supposed to be dried in the dryer? And on what heat setting? Did you take them out right away or did you leave them in the dryer over night?

Get them wet--spray with water or dunk them in water and roll in a towel to get the excess water out. Set the iron on the silk setting and iron them dry. Silk can be washed in the washing machine on gentle cycle in cold water. It does shrink but with playsilks that won't matter. The dryer shrinks silk more than the washing machine and will heat set wrinkles. Always iron damp silk. The iron will both dry the silk and take the wrinkles out. The playsilks will get a buttery suede feel to them with repeated washing and ironing.